The federal government has extended its deadline to April 4 for pitches from businesses who want to help build the wall along the U.S.-Mexico border.
The federal government has given businesses an extra week to express their interest in building the border wall. In the month since U.S. Customs and Border Protection began receiving bids, more than 600 companies have filed paperwork with the government.
But many details about the project are still unclear, said Brian Turmail, a spokesman for the Associated General Contractors of America.
"I think the question on every contractor’s right now is where is the money going to come from? And, of course, the government can’t issue a contract to perform any work if the money isn’t there," Turmail said.
Many construction businesses expressing interest come from border states. More than 40 from Arizona have filed paperwork with the federal government.